Geologic Time Scales

Geologic Time
Paleozoic Era
Cambrian Period
Ordovician Period
Silurian Period
Devonian Period
Carboniferous Period
Mesozoic Era
Triassic Period
Jurassic Period
Cretaceous Period
Cenozoic Era
Tertiary Period
Quaternary Period
Geologic Timeline

Web Sites

Paleozoic Era. UC Berkeley

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Geologic Time Scales

Devonian Period

Dating from 410-360mya, the Devonian Period saw a greater diversity on land. Ferns, horsetails, and the first seed plants, gymnosperms, appeared. Amphibians evolved during the Devonian also. Echinoderms and coral were very common by this time. The Devonian ended with another major extinction.